WO2019011250A1 - High-water-content oily sludge high-efficient comprehensive utilization method and negative-pressure circular heat storage recovery system - Google Patents

High-water-content oily sludge high-efficient comprehensive utilization method and negative-pressure circular heat storage recovery system Download PDF

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WO2019011250A1
WO2019011250A1 PCT/CN2018/095197 CN2018095197W WO2019011250A1 WO 2019011250 A1 WO2019011250 A1 WO 2019011250A1 CN 2018095197 W CN2018095197 W CN 2018095197W WO 2019011250 A1 WO2019011250 A1 WO 2019011250A1
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flue gas
oil
incineration
exhaust
heat storage
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PCT/CN2018/095197
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French (fr)
Chinese (zh)
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李秉正
李�一
吴汕
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重庆盎瑞悦科技有限公司
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Priority to CN201720843643.1U priority patent/CN208139284U/en
Priority to CN201710567452.1A priority patent/CN107255287B/en
Application filed by 重庆盎瑞悦科技有限公司 filed Critical 重庆盎瑞悦科技有限公司
Publication of WO2019011250A1 publication Critical patent/WO2019011250A1/en

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals

Abstract

A high-water-content oily sludge high-efficient comprehensive utilization method and a negative-pressure circular heat storage recovery system. The method and the system can be used to directly process oily sludge having a water content as high as 40-90% without requiring dewatering the sludge, and can recover crude oil in the oily sludge, thus improving the economic benefit of oily sludge processing; the method can recycle heat energy, thus greatly reducing processing cost; and secondary pollution is not generated, thus achieving high-efficiency, comprehensive-utilization, and clean processing of the oily sludge.

Description

高含水率含油污泥的高效综合利用方法及负压循环蓄热回收系统High-efficiency comprehensive utilization method of oily sludge with high water content and negative pressure circulation heat storage recovery system 技术领域Technical field

本发明属于固废无害化资源综合利用处理技术领域,具体涉及高含水率含油污泥的高效综合利用方法及负压循环蓄热回收系统。The invention belongs to the technical field of comprehensive utilization treatment of solid waste and harmless resources, and particularly relates to an efficient comprehensive utilization method of oily sludge with high water content and a negative pressure circulation heat storage recovery system.

背景技术Background technique

含油污泥,简称油泥,是石油开采、运输、炼制和含油污水处理过程中产生的固体废物,其中,炼油厂污水处理场产生的油泥主要来源于隔油池底泥、浮选池浮渣、原油罐底泥等,俗称“三泥”,这些油泥组成各异,通常含油率在10%~50%之间,含水率在40%~90%之间,含水率高,又极难脱水,导致“三泥”处理难度很大。Oily sludge, referred to as sludge, is solid waste generated during oil extraction, transportation, refining and oily wastewater treatment. The sludge produced by the refinery sewage treatment plant is mainly derived from the bottom of the grease trap and the scum of the flotation tank. Crude oil tank bottom mud, commonly known as "three muds", these sludges have different composition, usually with oil content between 10% and 50%, water content between 40% and 90%, high water content, and extremely difficult Dehydration makes it difficult to handle the "three muds".

目前,我国的石化企业每年都有大量的含油污泥产生,由于缺乏适当的处理技术,对“三泥”的处理一般为浓缩-沉降后转移到农村,不仅造成了二次污染,而且使得含油污泥中的石油资源无法得到有效利用,造成了一定的经济损失。目前处理含油污泥的方法主要有溶剂萃取法、焚烧法、生物处理法和焦化法等,其中,溶剂萃取法处理时间长、处理成本高,技术不够成熟,且仅适用于含油量较高的含油污泥,性价比较低;生物处理法一般周期较长,且不能回收原油,造成石油资源的浪费;焦化法涉及焦化装置的改造比较复杂,成本高,且处理量少;目前的焚烧法无法直接处理高含水率的含油污泥,都需要脱水等预处理步骤,增加了处理工序和成本,且由于“三泥”含油量低,焚烧时必须另外添加燃料油才能完成焚烧过程,大大增加了炼油厂的能耗,如国内炼油厂每焚烧经脱水后含水率仍为75-85%的“三泥”20-24吨,须添加1吨柴油做能源,过高的能耗使得炼油厂无法长期维持运行,目前国内许多厂家的焚烧炉均处于闲置状态,此外,焚烧还存在热量回收率低,空气二次污染严重等缺陷。因此,研究一种高效、绿色、综合利用处理高含水率含油污泥的方法,具有重要的环保意义和经济效益。At present, China's petrochemical enterprises produce a large amount of oily sludge every year. Due to the lack of proper treatment technology, the treatment of “three muds” is generally concentrated-settling and transferred to rural areas, which not only causes secondary pollution, but also makes oily. The oil resources in the sludge cannot be effectively utilized, resulting in certain economic losses. At present, the methods for treating oily sludge mainly include solvent extraction method, incineration method, biological treatment method and coking method. Among them, solvent extraction method has long processing time, high processing cost, and the technology is not mature enough, and is only suitable for high oil content. Oily sludge, low cost performance; biological treatment method generally has a long cycle, and can not recover crude oil, resulting in waste of petroleum resources; coking process involves the transformation of coking unit is more complicated, high cost, and less processing; current incineration method can not Direct treatment of oily sludge with high water content requires pretreatment steps such as dehydration, which increases the treatment process and cost. Because of the low oil content of “three muds”, it is necessary to add additional fuel oil to complete the incineration process when incineration, which greatly increases the number of sludges. The energy consumption of the refinery, such as 20-24 tons of “three muds” with a water content of 75-85% after dehydration in the domestic refinery, must add 1 ton of diesel oil as energy. Excessive energy consumption makes the refinery unable to Long-term maintenance operation, at present, many domestic manufacturers of incinerators are idle, in addition, there are still low heat recovery rate and serious secondary air pollution. Defects. Therefore, research on a high-efficiency, green, comprehensive utilization of high-water-containing oil-containing sludge has important environmental and economic benefits.

发明内容Summary of the invention

本发明的目的是提供一种高含水率含油污泥的高效综合利用方法,所述方法无需脱水预处理,能够直接处理含水率高达40%-90%的含油污泥,且能够回收含油污泥中的原油,提高了油泥处理的经济效益;此外,所述方法能够循环利用热能,大大降低了处理成本,且不产生二次污染,能够实现含油污泥的高效、综合The object of the present invention is to provide an efficient and comprehensive utilization method of oily sludge with high water content, which can directly treat oily sludge with water content of 40%-90% and recover oily sludge without dehydration pretreatment. The crude oil in the middle improves the economic benefit of the sludge treatment; in addition, the method can recycle the heat energy, greatly reduce the treatment cost, and does not generate secondary pollution, and can realize the efficient and comprehensive synthesis of the oily sludge.

利用、清洁化处理。Use, clean treatment.

为实现上述发明目的,本发明提供以下技术方案:In order to achieve the above object, the present invention provides the following technical solutions:

一种高含水率含油污泥的高效综合利用方法,包括以下步骤:An efficient and comprehensive utilization method for oily sludge with high water content, comprising the following steps:

步骤1:将含水率为40%-90%的含油污泥与农作物粉碎物料、生石灰、生物质炭、调质剂按质量比60-80:5-10:3-5:0-10:2-10的比例混合制得混合物,所述的农作物粉碎物料选自粒径为2-8mm的糠壳、秸秆和玉米芯等,所述的生物质炭粒径为1-8mm,发热量为4500-6500大卡,所述的调质剂为表面活性剂;Step 1: The oily sludge with a water content of 40%-90% and the crushed material of the crop, quicklime, biomass charcoal, and tempering agent according to the mass ratio of 60-80:5-10:3-5:0-10:2 Mixing a ratio of -10 to prepare a mixture, the crop crushing material is selected from the group consisting of clam shells having a particle size of 2-8 mm, straw and corn cob, etc., and the biomass carbon has a particle size of 1-8 mm and a calorific value of 4500. -6500 kcal, the tempering agent is a surfactant;

步骤2:将步骤1所得的混合物送入负压循环蓄热回收系统的焚烧装置中,所述混合物的厚度为350-700mm,混合的行进速度0-0.2m/s,所述负压循环蓄热回收系统包括混合装置(1)、焚烧装置(2),抽风装置(3)、烟气循环装置(4)、油水收集装置(5)、传送装置(6)和烟气净化装置(7),其特征在于:Step 2: The mixture obtained in the step 1 is sent to an incinerator of a negative pressure circulation heat storage recovery system, the mixture has a thickness of 350-700 mm, and the mixed traveling speed is 0-0.2 m/s, and the negative pressure is cyclically stored. The heat recovery system includes a mixing device (1), an incineration device (2), an exhaust device (3), a flue gas circulation device (4), an oil-water collecting device (5), a conveying device (6), and a flue gas cleaning device (7). , which is characterized by:

所述混合装置(1)包括多个料仓(11)、计量称(12)、混合搅拌装置(13),所述料仓(11)的出料口对准计量称(12)的称量盘,所述计量称(12)的称量盘与混合搅拌装置(13)的进料口对应,料仓(11)内的农作物粉碎物料、生石灰、生物质炭和调质剂经计量称(12)称量后,送入混合搅拌装置(13)内与高含水率含油污泥混合搅拌得到步骤1所述的混合物,混合搅拌装置(13)的出料口连接传送装置(6),经传送装置(6)送入焚烧装置(2)中;The mixing device (1) comprises a plurality of silos (11), a weighing scale (12), a mixing and agitating device (13), and the discharge port of the silo (11) is aligned with the weighing scale (12) The weighing plate of the weighing scale (12) corresponds to the feeding port of the mixing and stirring device (13), and the pulverized material of the crop, the quicklime, the biomass charcoal and the tempering agent in the silo (11) are metered ( 12) After weighing, it is sent to the mixing and agitating device (13) and mixed with the high water content oily sludge to obtain the mixture described in the first step, and the discharge port of the mixing and stirring device (13) is connected to the conveying device (6). The conveying device (6) is sent to the incinerator (2);

所述焚烧装置(2)由前至后依次包括布料段(20)、干燥段(21)、点火段(22)、焚烧段(23)和冷却段(24),所述布料段(20)设有物料打散器(25),所述干燥段(21)的长度为1-6m,点火段(22)的长度为1-3m,点火温度为850℃-1050℃,既能够避免混合物无法点燃的缺陷,又能够避免温度过高引起的能耗高、混合物表层熔融影响透气性的缺陷,焚烧段(23)的长度为4-20m,焚烧段温度为1100℃,能够保证有害物质能得到充分的焚烧,所述干燥段(21)和点火段(22)的上方设有从前至后由低到高的预热罩(26),与点火段(22)位置对应的预热罩上设有废气进口(27)和燃料喷嘴(28),形成二燃室,既对物料进行干燥预热,又将废气进行深度处理,所述干燥段(21)、点火段(22)、焚烧段(23)和冷却段(24)的下方与抽风装置(3)密封连接,所述焚烧段(23)的上方与烟气循环系统(4)密封连接,步骤1所得混合物的上部在点火段(22),点火后,在抽风装置(3)产生的负压作用下,火从混合物上部开始向下燃烧,上部燃烧产生的高温蒸汽一方面对下部物料进行烘干和预热,另一方面将下部物料中的水和油分带走,带出的油水混合物在重力作用下从底部流出进入油水收集装置(5);The incinerator (2) includes a cloth section (20), a drying section (21), an ignition section (22), an incineration section (23) and a cooling section (24) from front to back, and the cloth section (20) A material disperser (25) is provided, the drying section (21) has a length of 1-6 m, the ignition section (22) has a length of 1-3 m, and the ignition temperature is 850 ° C - 1050 ° C, which can prevent the mixture from being able to The defects of ignition can avoid the high energy consumption caused by excessive temperature and the defects of the surface layer melting affecting the gas permeability. The length of the incineration section (23) is 4-20m, and the temperature of the incineration section is 1100 °C, which can ensure the harmful substances can be obtained. Fully incineration, a preheating cover (26) from front to back from low to high is provided above the drying section (21) and the ignition section (22), and a preheating cover corresponding to the position of the ignition section (22) is provided. There is an exhaust gas inlet (27) and a fuel nozzle (28) to form a second combustion chamber for both drying and preheating the material, and further treating the exhaust gas, the drying section (21), the ignition section (22), and the incineration section ( 23) and the lower portion of the cooling section (24) is sealingly connected to the air extracting device (3), and the upper portion of the incineration section (23) is sealingly connected with the flue gas circulation system (4), and the mixture obtained in the step 1 is After the ignition section (22), after ignition, under the negative pressure generated by the air extracting device (3), the fire starts to burn downward from the upper part of the mixture, and the high-temperature steam generated by the upper combustion performs drying and preheating of the lower material on the one hand. On the other hand, the water and oil in the lower material are taken away, and the oil-water mixture brought out flows out from the bottom into the oil-water collecting device (5) under the action of gravity;

所述抽风装置(3)包括多个抽风罩(31)、每个抽风罩(31)连接一套由抽风管(32)和抽风机(33)组成的抽风管路,所述抽风管(32)和抽风机(33)之间设有油水收集装置(5),与所述干燥段(21)下方连通的抽风管路的尾端与烟气净化装置(7)连通,与所述点火段(22)和焚烧段(23)下方连通的抽风管路的尾端与烟气循环装置(4)连通,与焚烧段(23)下方连通的最后一级抽风管路的出口与预热罩(26)的废气进口(27)连通,与冷却段(24)下方连通的抽风管路与机尾除尘装置连通;The air extracting device (3) includes a plurality of air hoods (31), and each of the air hoods (31) is connected to a set of exhaust pipes composed of an air exhaust pipe (32) and an air blower (33). An oil-water collecting device (5) is disposed between the pipe (32) and the exhaust fan (33), and a tail end of the exhaust pipe communicating with the lower portion of the drying section (21) communicates with the flue gas purification device (7), and The tail end of the exhaust pipe connecting the ignition section (22) and the incineration section (23) is connected to the flue gas circulation device (4), and the last stage exhaust pipe connected to the lower portion of the incineration section (23) The outlet is in communication with the exhaust gas inlet (27) of the preheating hood (26), and the exhausting conduit communicating with the lower portion of the cooling section (24) is connected to the tail dust removing device;

所述的烟气循环装置(4)包括多个烟气罩(41),每个烟气罩(41)上均设有废气入口(42)和新风配入口(43),所述烟气罩(41)的废气入口(42)与上一级抽风管路的尾端连通,混合物料中的有害物质在高温焚烧中分解形成的烟气,经抽风罩(31)进入抽风管(32),在油水收集装置(5)中进行烟气油水分离收集后,剩余烟气通过抽风机(33)送至下一级烟气罩(41),完成对后段混合物料的干燥和预热,带出的油水混合物在重力作用下从底部流出进入油水收集装置(5),与焚烧段(23)下方连通的最后一级抽风管路中的烟气通过废气进口(27)进入预热罩(26)后,在二燃室进行二次燃烧,深度处理后进入烟气净化装置(7);The flue gas circulation device (4) comprises a plurality of flue gas hoods (41), each of which is provided with an exhaust gas inlet (42) and a fresh air distribution inlet (43), the flue gas hood The exhaust gas inlet (42) of (41) is in communication with the tail end of the upper-stage exhausting pipe, and the flue gas formed by the decomposition of the harmful substances in the mixed material in the high-temperature incineration enters the exhaust pipe through the draft hood (31) (32) After the flue gas oil and water is separated and collected in the oil-water collecting device (5), the remaining flue gas is sent to the next-stage flue gas hood (41) through the exhaust fan (33) to complete the drying and preheating of the mixture material in the latter stage. The oil-water mixture brought out flows out from the bottom into the oil-water collecting device (5) under gravity, and the flue gas in the last-stage exhaust pipe communicating with the lower portion of the incineration section (23) enters the preheating through the exhaust gas inlet (27). After the cover (26), the secondary combustion in the second combustion chamber, after the advanced treatment, enters the flue gas purification device (7);

所述油水收集装置(5)包括上部呈圆柱状,下部呈倒圆锥状的旋风式冷凝除油器(51),所述旋风式冷凝除油器(51)的内部设有螺旋刮油板(52)、外壁设有与抽风管(32)的尾端连通的烟气进口(53)、 顶部设有与烟气罩(41)的废气入口(42)连通的烟气出口(54),底部与油水收集器(55)连通,烟气和含油液滴经抽风管进入油水收集装置(5)后,含有液滴经螺旋刮油板(52)与烟气分离,进入油水收集器(55),剩余烟气经烟气出口(54)进入下一级烟气罩(41),实现石油的回收利用;The oil-water collecting device (5) includes a cyclone type condensing oil remover (51) having an upper portion in a cylindrical shape and an inverted cone shape in a lower portion, and a spiral scraping oil plate is disposed inside the cyclone type condensing oil remover (51) ( 52), the outer wall is provided with a flue gas inlet (53) communicating with the tail end of the exhaust pipe (32), and the top is provided with a flue gas outlet (54) communicating with the exhaust gas inlet (42) of the flue gas hood (41), The bottom is connected with the oil water collector (55), and the flue gas and the oily liquid droplets enter the oil water collecting device (5) through the air exhaust pipe, and the liquid droplets are separated from the flue gas by the spiral oil scraping plate (52), and enter the oil water collector ( 55), the remaining flue gas enters the next-stage flue gas hood (41) through the flue gas outlet (54) to realize the recovery and utilization of petroleum;

所述烟气净化装置(7)的出气管经过抽风机连接至烟囱,将净化达标的废气排出。The outlet pipe of the flue gas purification device (7) is connected to the chimney through an exhaust fan, and exhausts the purified exhaust gas.

根据本发明所述的方法,步骤1中所述的农作物粉碎物料为粒径为2-8mm的糠壳,且污泥、糠壳、生石灰、生物质炭和调质剂的质量比为60-75:6-10:3-5:2-8:5-10。According to the method of the present invention, the crop crushing material described in the step 1 is a clam shell having a particle diameter of 2-8 mm, and the mass ratio of the sludge, the clam shell, the quicklime, the biomass charcoal and the quenching agent is 60- 75:6-10:3-5:2-8:5-10.

本发明人发现,含油污泥、农作物粉碎物料、生石灰、生物质炭、调质剂五者的比例对混合物的焚烧效果影响较大,当上述五者按质量比60-80:5-10:3-5:0-10:2-10的比例,尤其是按质量比60-75:6-10:3-5:2-8:5-10的比例混合时,得到的混合物透气性好、热值水平适当、焚烧速度适宜,燃烧充分,同时又能为含油液滴提供下流的通道。The inventors have found that the ratio of oily sludge, crop crushed material, quicklime, biomass charcoal, and tempering agent has a great influence on the incineration effect of the mixture, when the above five are based on the mass ratio of 60-80:5-10: The ratio of 3-5:0-10:2-10, especially when mixed at a mass ratio of 60-75:6-10:3-5:2-8:5-10, the obtained mixture has good gas permeability, The calorific value is appropriate, the incineration rate is appropriate, the combustion is sufficient, and at the same time it provides a downstream passage for the oily droplets.

此外,农作物粉碎物料和生物质炭粒的粒径也对混合物的性质影响很大,当农作物粉碎物料粒径或生物质炭粒粒径超过8mm时,制得的混合物透气性过好,焚烧速度过快,燃烧不充分;当农作物粉碎物料粒径小于2mm或生物质炭粒粒径小于1mm时,制得的混合物透气性差,风机负荷过大,焚烧不充分,且无法提供足够的油滴下流通道;本发明人通过大量的试验发现,当农作物粉碎物料粒径为2-8mm或生物质炭粒粒径为1-8mm时,既能保证制得的混合物的透气性,燃烧充分,又能为含油液滴提供足够的下流通道。In addition, the particle size of the crop pulverized material and the biomass carbon granule also has a great influence on the properties of the mixture. When the particle size of the pulverized material of the crop or the particle size of the biomass carbon granule exceeds 8 mm, the prepared mixture has excellent gas permeability and incineration rate. Too fast, insufficient combustion; when the particle size of the crop crushed material is less than 2mm or the particle size of the biomass carbon particle is less than 1mm, the prepared mixture has poor gas permeability, the fan load is too large, the incineration is insufficient, and sufficient oil drops are not provided. The inventors have found through a large number of experiments that when the particle size of the crushed material of the crop is 2-8 mm or the particle size of the biomass carbon particle is 1-8 mm, the gas permeability of the obtained mixture can be ensured, and the combustion can be fully and can be Provide sufficient downflow channels for oily droplets.

根据本发明所述的方法,步骤2中所述的混合物厚度为500-700mm。According to the method of the present invention, the mixture described in step 2 has a thickness of from 500 to 700 mm.

本发明人还发现,混合物送入负压循环蓄热回收系统的焚烧装置时,厚度和行进速度对焚烧效果也有很大影响,当厚度超过700mm或行进速度超过0.2m/s时,混合物的透气性不够,无法焚烧充分,影响焚烧效果;若厚度低于350mm时,混合物的蓄热效果差,焚烧温度较低,无法充分分离出含油污泥中的石油,石油回收率低;只有控制混合物的厚度为350-700mm,且行进速度为0-0.2m/s时,既能保证混合物焚烧充分,又能有效回收混合物中的石油,提高了固废处理的经济效益和处理效率,同时能够确保系统的稳定运行。The inventors have also found that when the mixture is fed to the incinerator of the negative pressure circulating heat storage recovery system, the thickness and the traveling speed also have a great influence on the incineration effect. When the thickness exceeds 700 mm or the traveling speed exceeds 0.2 m/s, the mixture is breathable. Insufficient in nature, unable to incinerate sufficiently, affecting the effect of incineration; if the thickness is less than 350mm, the heat storage effect of the mixture is poor, the incineration temperature is low, and the oil in the oily sludge cannot be sufficiently separated, and the oil recovery rate is low; only the mixture is controlled. When the thickness is 350-700mm and the traveling speed is 0-0.2m/s, it can ensure the incineration of the mixture is sufficient, and the oil in the mixture can be effectively recovered, which improves the economic benefit and treatment efficiency of the solid waste treatment, and ensures the system. Stable operation.

根据本发明所述的方法,步骤2中所述的烟气装置(4)的新风配入口上设有进风管调节阀,通过控制其开度控制新风的配入量。According to the method of the present invention, the fresh air distribution inlet of the flue gas device (4) described in the step 2 is provided with an air inlet regulating valve, and the opening amount of the fresh air is controlled by controlling the opening degree thereof.

本发明的方法,利用负压循环蓄热焚烧装置的特点,添加一定的辅助物料,来实现对含油污泥的处置,其特点是能够在对含油污泥中的有害物质进行焚烧处理的同时,利用焚烧装置边焚烧边预热的特点,将污泥中的油类提取出来,实现对油类物质的回收利用,具体优势如下:The method of the invention utilizes the characteristics of the negative pressure circulating heat storage incinerator and adds a certain auxiliary material to realize the disposal of the oily sludge, which is characterized in that it can incinerate the harmful substances in the oily sludge, The incineration device is used to incinerate and preheat the oil, and the oil in the sludge is extracted to realize the recycling of the oil materials. The specific advantages are as follows:

1、采用负压循环蓄热回收技术,有效利用上层物料焚烧产生的高温蒸汽对下部物料进行烘干和预热,由于下部物料为湿物料,在上部产生的热蒸汽作用下,将混合料中的水和油分带走,油水混合蒸汽遇到冷物料凝结成油水液滴,烟气的高温同时也可以降低粘度、增加重油的流动性,液滴从底部流出,进行统一收集,大幅降低能耗和处理成本;1. Using negative pressure circulating heat storage recovery technology, effectively use the high temperature steam generated by the incineration of the upper layer material to dry and preheat the lower material. Since the lower material is wet material, under the action of the hot steam generated in the upper part, the mixture will be mixed. The water and oil are taken away, and the mixed steam of oil and water encounters the condensation of cold materials into oil droplets. The high temperature of the flue gas can also reduce the viscosity and increase the fluidity of the heavy oil. The droplets flow out from the bottom for uniform collection and greatly reduce energy consumption. And processing costs;

2、能对高含水率含油污泥直接进行处理,解决了目前高含水率含油污泥的处置难题;2. It can directly treat oily sludge with high water content and solve the problem of disposal of oily sludge with high water content;

3、焚烧产生的烟气一方面通过抽风装置和烟气装置循环利用热能,一方面在抽风装置和烟气装置的密封管路中运行,最终在二燃室深度处理后进入烟气净化装置,不产生二次污染,能实现清洁化生产;3. The flue gas generated by incineration is recycled by the exhaust device and the flue gas device on the one hand, and in the sealed pipeline of the exhaust device and the flue gas device on the other hand, and finally enters the flue gas purification device after the deep treatment of the second combustion chamber. Can not achieve secondary pollution, can achieve clean production;

4、采用了烟气多级循环二次燃烧技术,气体中的有害成分得到有效处理,同时燃烧过程中废气的含氧量得到有效利用,因此大幅减少新进风量,进而大量减少烟气排放总量,与一般焚烧方式烟气排放总量相比可减少60%以上;4. The multi-stage secondary combustion technology of flue gas is adopted, the harmful components in the gas are effectively treated, and the oxygen content of the exhaust gas is effectively utilized in the combustion process, thereby greatly reducing the amount of fresh air intake, thereby greatly reducing the total smoke emission. The amount can be reduced by more than 60% compared with the total amount of flue gas emissions from general incineration methods;

5、排放的水、气、渣均达到国家标准;5. The discharged water, gas and slag all meet the national standards;

6、污泥减量化、无害化、资源化程度高,效果明显;6. The sludge is reduced, harmless, and resourced to a high degree, and the effect is obvious;

7、含油污泥的原油可进行回收;7. Crude oil containing oil sludge can be recycled;

8、处理后的残渣达标后,可进行油井回填。8. After the treated residue reaches the standard, the oil well can be backfilled.

附图说明DRAWINGS

图1是本发明负压循环蓄热回收系统的结构示意图;1 is a schematic structural view of a negative pressure circulation heat storage recovery system of the present invention;

图2是本发明负压循环蓄热回收系统混合装置的结构示意图;2 is a schematic structural view of a mixing device of a negative pressure circulating heat storage recovery system of the present invention;

图3是本发明负压循环蓄热回收系统焚烧装置、抽风装置、烟气循环装置、3 is a negative pressure circulation heat storage recovery system incineration device, a draft device, a flue gas circulation device,

油水收集装置和烟气净化装置的的结构示意图;Schematic diagram of the oil-water collecting device and the flue gas cleaning device;

图4是本发明负压循环蓄热回收系统旋风式除油器的结构示意图;4 is a schematic structural view of a cyclone type degreaser of a negative pressure circulating heat storage recovery system of the present invention;

图5是本发明的混合物焚烧原理示意图;Figure 5 is a schematic view showing the principle of incineration of the mixture of the present invention;

图6是本发明的方法流程图;Figure 6 is a flow chart of the method of the present invention;

图中,In the picture,

1-混合装置,11-料仓,12-计量称,13-混合搅拌罐;1-mixing device, 11- silo, 12-meter weighing, 13-mixing tank;

2-焚烧装置,20-布料段,21-干燥段,22-点火段,23-焚烧段,24-冷却段,25-物料打散器,26-预热罩,27-废气进口,28-燃料喷嘴;2-incineration unit, 20-disc section, 21-dry section, 22-ignition section, 23-incineration section, 24-cooling section, 25-material disperser, 26-preheating hood, 27-exhaust gas inlet, 28- Fuel nozzle

3-抽风装置,31-抽风罩,32-抽风管,33-抽风机;3-exhaust device, 31-exhaust hood, 32-exhaust pipe, 33-exhaust fan;

4-烟气循环装置,41-烟气罩,42-废气入口,43-新风配入口;4-flue gas circulation device, 41-flue gas hood, 42-exhaust gas inlet, 43- fresh air distribution inlet;

5-油水收集装置,51-旋风式冷凝除油器,52-螺旋刮油板,53-烟气进口,54-烟气出口,55-油水收集器;5-oil water collection device, 51-cyclone condensing degreaser, 52-spiral scraper, 53-flue gas inlet, 54-flue gas outlet, 55-oil water collector;

6-传送装置;6-transfer device;

7-烟气净化装置。7-Fume purification device.

具体实施方式Detailed ways

实施例1负压循环蓄热回收系统Embodiment 1 Negative pressure circulation heat storage recovery system

如图1-6所示,本发明的负压循环蓄热回收系统包括混合装置1、焚烧装置2,抽风装置3、烟气循环装置4、油水收集装置5、传送装置6和烟气净化装置7,所述混合装置1包括多个料仓11、计量称12、混合搅拌装置13,所述料仓11的出料口对准计量称12的称量盘,所述计量称12的称量盘与混合搅拌装置13的进料口对应,料仓11内的农作物粉碎物料、生石灰、生物质炭和调质剂经计量称12称量后,送入混合搅拌装置13内与高含水率含油污泥混合搅拌得到混合物,混合搅拌装置13的出料口连接传送装置6,经传送装置6送入焚烧装置2中;As shown in FIGS. 1-6, the negative pressure circulating heat storage recovery system of the present invention comprises a mixing device 1, an incinerator 2, an exhaust device 3, a flue gas circulation device 4, an oil water collecting device 5, a conveying device 6, and a flue gas purification device. 7, the mixing device 1 comprises a plurality of silos 11, a weighing scale 12, a mixing and agitating device 13, the discharge port of the silo 11 is aligned with the weighing disc of the weighing scale 12, and the weighing is said to be 12 weighing The tray corresponds to the feed port of the mixing and stirring device 13, and the crop crushed material, quicklime, biomass charcoal and quenching agent in the silo 11 are weighed by weighing 12, and then sent to the mixing and stirring device 13 to contain oil with high water content. Mixing the sludge to obtain a mixture, and the discharge port of the mixing and stirring device 13 is connected to the conveying device 6, and sent to the incinerator 2 via the conveying device 6;

所述焚烧装置2由前至后依次包括布料段20、干燥段21、点火段22、焚烧段23和冷却段24,所述布料段20设有物料打散器25,所述干燥段21的长度为1-20m,点火段22的长度为1-6m,点火温度为850℃-1050℃,既能够避免混合物无法点燃的缺陷,又能够避免温度过高引起的能耗高、混合物表层熔融影响透气性的缺陷,焚烧段23的长度为4-50m,焚烧段温度为1100℃,能够保证有害物质能得到充分的焚烧,所述干燥段21和点火段22的上方设有从前至后由低到高的预热罩26,与点火段22位置对应的预热罩上设有废气进口27和燃料喷嘴28,形成二燃室,既对物料进行干燥预热,又将废气进行深度处理,所述干燥段21、点火段22、焚烧段23和冷却段24的下方与抽风装置3密封连接,所述焚烧段23的上方与烟气循环系统4密封连接,步骤1所得混合物的上部在点火段22点火后,在抽风装置3产生的负压作用下,火从混合物上部开始向下燃烧,上部燃烧产生的高温蒸汽一方面对下部物料进行烘干和预热,另一方面将下部物料中的水和油分带走,带出的油水混合物在重力作用下从底部流出进入油水收集装置5;The incinerator 2 comprises, in order from front to back, a cloth section 20, a drying section 21, an ignition section 22, an incineration section 23 and a cooling section 24. The cloth section 20 is provided with a material disperser 25, and the drying section 21 The length is 1-20m, the length of the ignition section 22 is 1-6m, and the ignition temperature is 850°C-1050°C, which can avoid the defects that the mixture can not be ignited, and can avoid the high energy consumption caused by excessive temperature and the surface melting of the mixture. The defect of gas permeability, the length of the incineration section 23 is 4-50 m, and the temperature of the incineration section is 1100 ° C, which can ensure that the harmful substances can be fully incinerated, and the drying section 21 and the ignition section 22 are provided from the front to the rear by the low To the high preheating cover 26, the preheating cover corresponding to the position of the ignition section 22 is provided with an exhaust gas inlet 27 and a fuel nozzle 28 to form a second combustion chamber, which not only preheats the material but also deeply treats the exhaust gas. The lower portion of the drying section 21, the ignition section 22, the incineration section 23 and the cooling section 24 are sealingly connected to the air extracting device 3, and the upper portion of the incineration section 23 is sealingly connected to the flue gas circulation system 4, and the upper part of the mixture obtained in the step 1 is in the ignition section. 22 after ignition, produced in the exhaust device 3 Under the negative pressure, the fire starts to burn downward from the upper part of the mixture, and the high-temperature steam generated by the upper combustion performs drying and preheating of the lower material on the one hand, and carries away the water and oil in the lower material on the other hand. The oil-water mixture flows out from the bottom into the oil-water collecting device 5 under the action of gravity;

所述抽风装置3包括多个抽风罩31、每个抽风罩31连接一套由抽风管32和抽风机33组成的抽风管路,所述抽风管32和抽风机33之间设有油水收集装置5,与所述干燥段21下方连通的抽风管路的尾端与烟气净化装置7连通,与所述点火段22和焚烧段23下方连通的抽风管路的尾端与烟气循环装置4连通,与焚烧段23下方连通的最后一级抽风管路的出口与预热罩26的废气进口27连通,与冷却段24下方连通的抽风管路与机尾除尘装置连通;The air extracting device 3 includes a plurality of air hoods 31, and each of the air hoods 31 is connected to a set of exhaust pipes composed of an air exhaust pipe 32 and an air blower 33. The oil-water collecting device 5, the tail end of the exhaust duct communicating with the lower portion of the drying section 21 is in communication with the flue gas purifying device 7, and the tail end of the exhaust duct communicating with the ignition section 22 and the incineration section 23 is The flue gas circulation device 4 is connected, and the outlet of the last stage exhaust pipe communicating with the lower portion of the incineration section 23 communicates with the exhaust gas inlet 27 of the preheating cover 26, and the exhaust pipe and the tail dust removing device communicating with the lower portion of the cooling section 24 Connected

所述的烟气循环装置4包括多个烟气罩41,每个烟气罩41上均设有废气入口42和新风配入口43,所述烟气罩41的废气入口42与上一级抽风管路的尾端连通,混合物料中的有害物质在高温焚烧中分解形成的烟气,经抽风罩31进入抽风管32,在油水收集装置5中进行烟气油水分离收集后,剩余烟气通过抽风机33送至下一级烟气罩41,完成对后段混合物料的干燥和预热,实现了热能的传递,循环利用了热能,提高了经济效率,与焚烧段23下方连通的最后一级抽风管路中的烟气通过废气进口27进入预热罩26后,在二燃室进行二次燃烧,深度处理后进入烟气净化装置7;The flue gas circulation device 4 includes a plurality of flue gas hoods 41. Each of the flue gas hoods 41 is provided with an exhaust gas inlet 42 and a fresh air distribution inlet 43. The exhaust gas inlet 42 of the flue gas hood 41 is pumped with the upper stage. The tail end of the air duct is connected, and the flue gas formed by the decomposition of the harmful substances in the mixed material in the high temperature incineration enters the exhaust duct 32 through the exhaust hood 31, and the flue gas oil and water is separated and collected in the oil water collecting device 5, and the remaining flue gas The gas is sent to the next-stage flue gas hood 41 through the suction fan 33 to complete the drying and preheating of the mixture material in the latter stage, thereby realizing the transfer of heat energy, recycling the heat energy, improving the economic efficiency, and communicating with the lower portion of the incineration section 23. The flue gas in the last stage exhaust pipe enters the preheating cover 26 through the exhaust gas inlet 27, and is subjected to secondary combustion in the second combustion chamber, and after advanced treatment, enters the flue gas purifying device 7;

所述油水收集装置5包括上部呈圆柱状,下部呈倒圆锥状的旋风式冷凝除油器51,所述旋风式冷凝除油器51的内部设有螺旋刮油板52、外壁设有与抽风管32的尾端连通的烟气进口53、顶部设有与烟气罩41的废气入口42连通的烟气出口54,底部与油水收集器55连通,烟气和含油液滴经抽风管进入油水收集装置5后,含有液滴经螺旋刮油板52与烟气分离,进入油水收集器55,剩余烟气经烟气出口54进 入下一级烟气罩41,实现石油的回收利用;The oil-water collecting device 5 includes a cyclone type condensing oil remover 51 having an upper portion in a cylindrical shape and an inverted cone shape in the lower portion, and the inside of the cyclone type condensing oil remover 51 is provided with a spiral oil scraping plate 52, and the outer wall is provided and pumped. The flue gas inlet 53 communicated with the tail end of the air duct 32, the top is provided with a flue gas outlet 54 communicating with the exhaust gas inlet 42 of the flue gas hood 41, and the bottom is connected with the oil water collector 55, and the flue gas and the oily liquid droplets are passed through the exhaust pipe. After entering the oil-water collecting device 5, the liquid droplets are separated from the flue gas by the spiral scraping oil plate 52, enter the oil water collector 55, and the remaining flue gas enters the next-stage flue gas hood 41 through the flue gas outlet 54 to realize the recovery and utilization of petroleum;

所述烟气净化装置7的出气管经过抽风机连接至烟囱,将净化达标的废气排出。The outlet pipe of the flue gas purification device 7 is connected to the chimney through an exhaust fan, and exhausts the purified exhaust gas.

所述的烟气装置4的新风配入口上设有进风管调节阀,通过控制其开度控制新风的配入量。The fresh air distribution inlet of the flue gas device 4 is provided with an air inlet regulating valve, and the opening amount of the fresh air is controlled by controlling the opening degree thereof.

实施例2高含水率含油污泥的综合利用Example 2 Comprehensive Utilization of Oily Sludge with High Moisture Content

步骤1:将含水率为90%的含油污泥与糠壳、生石灰、生物质炭、氯化铁按质量比70:5:6:10:9的比例混合制得混合物,所述糠壳的粒径为2mm,所述生物质炭粒径为5mm,发热量为5000大卡;Step 1: mixing the oily sludge having a water content of 90% with clam shell, quicklime, biomass charcoal and ferric chloride in a ratio of 70:5:6:10:9 by mass ratio, the clam shell The particle size is 2 mm, the biomass carbon has a particle size of 5 mm, and the calorific value is 5000 kcal;

步骤2:将步骤1所得的混合物送入实施例1所述的负压循环蓄热回收系统的焚烧装置中,所述混合物的厚度为500mm,混合物的行进速度0.05m/s,点火焚烧,经烟气净化装置7排出的废气满足欧盟2000标准。Step 2: The mixture obtained in the step 1 is sent to the incinerator of the negative pressure circulation heat storage recovery system described in Embodiment 1, the mixture has a thickness of 500 mm, the traveling speed of the mixture is 0.05 m/s, and the ignition is incinerated. The exhaust gas discharged from the flue gas purification device 7 satisfies the EU 2000 standard.

实施例3高含水率含油污泥的综合利用Example 3 Comprehensive Utilization of Oily Sludge with High Moisture Content

步骤1:将含水率为40%的含油污泥与糠壳、生石灰、生物质炭、氯化铁按质量比80:8:5:3:4的比例混合制得混合物,所述糠壳的粒径为8mm,所述生物质炭粒径为8mm,发热量为4500大卡;Step 1: mixing the oily sludge having a water content of 40% with clam shell, quicklime, biomass charcoal and ferric chloride in a ratio of mass ratio of 80:8:5:3:4 to obtain a mixture of the clam shell The particle size is 8 mm, the biomass carbon has a particle size of 8 mm, and the calorific value is 4,500 kcal;

步骤2:将步骤1所得的混合物送入实施例1所述的负压循环蓄热回收系统的焚烧装置中,所述混合物的厚度为700mm,混合物的行进速度0.1m/s,点火焚烧,经烟气净化装置7排出的废气满足欧盟2000标准。Step 2: The mixture obtained in the step 1 is sent to the incinerator of the negative pressure circulation heat storage recovery system described in Embodiment 1, the mixture has a thickness of 700 mm, the traveling speed of the mixture is 0.1 m/s, and the ignition is incinerated. The exhaust gas discharged from the flue gas purification device 7 satisfies the EU 2000 standard.

实施例4高含水率含油污泥的综合利用Example 4 Comprehensive Utilization of Oily Sludge with High Moisture Content

步骤1:将含水率为60%的含油污泥与糠壳、生石灰、生物质炭、氯化铁按质量比60:10:10:10:10的比例混合制得混合物,所述糠壳的粒径为8mm,所述生物质炭粒径为8mm,发热量为4500大卡;Step 1: mixing an oily sludge having a water content of 60% with clam shell, quicklime, biomass carbon, and ferric chloride at a mass ratio of 60:10:10:10:10 to prepare a mixture of the clam shell The particle size is 8 mm, the biomass carbon has a particle size of 8 mm, and the calorific value is 4,500 kcal;

步骤2:将步骤1所得的混合物送入实施例1所述的负压循环蓄热回收系统的焚烧装置中,所述混合物的厚度为700mm,混合物的行进速度0.2m/s,点火焚烧,经烟气净化装置7排出的废气满足欧盟2000标准。Step 2: The mixture obtained in the step 1 is sent to the incinerator of the negative pressure circulation heat storage recovery system described in Embodiment 1, the thickness of the mixture is 700 mm, the traveling speed of the mixture is 0.2 m/s, and the ignition is incinerated. The exhaust gas discharged from the flue gas purification device 7 satisfies the EU 2000 standard.

Claims (12)

  1. 高含水率含油污泥的高效综合利用方法,包括以下步骤:An efficient and comprehensive utilization method of oily sludge with high water content, including the following steps:
    步骤1:将含水率为40%-90%的含油污泥与农作物粉碎物料、生石灰、生物质炭、调质剂按质量比60-80:5-10:3-5:0-10:2-10的比例混合制得混合物,所述的农作物粉碎物料选自粒径为2-8mm的糠壳、秸秆或玉米芯,所述的生物质炭粒径为1-8mm,发热量为4500-6500大卡,所述的调质剂为表面活性剂氯化铁;Step 1: The oily sludge with a water content of 40%-90% and the crushed material of the crop, quicklime, biomass charcoal, and tempering agent according to the mass ratio of 60-80:5-10:3-5:0-10:2 A mixture of -10 is prepared to obtain a mixture, wherein the crop crushing material is selected from the group consisting of clam shells, straws or corn cobs having a particle size of 2-8 mm, and the biomass carbon has a particle size of 1-8 mm and a calorific value of 4500- 6500 kcal, the tempering agent is a surfactant ferric chloride;
    步骤2:将步骤1所得的混合物送入负压循环蓄热回收系统的焚烧装置中,所述混合物的厚度为350-700mm,混合的行进速度0-0.2m/s,所述负压循环蓄热回收系统在对含油污泥中的有害物质进行焚烧处理的同时,利用焚烧装置边焚烧边预热的特点,将污泥中的油类提取出来,实现对油类物质的回收利用。Step 2: The mixture obtained in the step 1 is sent to an incinerator of a negative pressure circulation heat storage recovery system, the mixture has a thickness of 350-700 mm, and the mixed traveling speed is 0-0.2 m/s, and the negative pressure is cyclically stored. The heat recovery system incinerate the harmful substances in the oily sludge, and uses the incineration device to incinerate and preheat the oil to extract the oil from the sludge to realize the recycling of the oil.
  2. 如权利要求1所述的方法,其特征在于:步骤1中所述的农作物粉碎物料为粒径为2-8mm的糠壳,且污泥、糠壳、生石灰、生物质炭和调质剂的质量比为60-75:6-10:3-5:2-8:5-10。The method according to claim 1, wherein the pulverized material of the crop in the step 1 is a clam shell having a particle size of 2-8 mm, and the sludge, the clam shell, the quicklime, the biomass charcoal and the tempering agent are The mass ratio is 60-75:6-10:3-5:2-8:5-10.
  3. 如权利要求1所述的方法,其特征在于:步骤2中所述的混合物厚度为500-700mm。The method of claim 1 wherein said mixture in step 2 has a thickness of from 500 to 700 mm.
  4. 实现权利要求1~3任一项所述方法的负压循环蓄热回收系统,包括混合装置(1)、焚烧装置(2),抽风装置(3)、烟气循环装置(4)、油水收集装置(5)、传送装置(6)和烟气净化装置(7),其特征在于:A negative pressure circulating heat storage recovery system for realizing the method according to any one of claims 1 to 3, comprising a mixing device (1), an incineration device (2), a draft device (3), a flue gas circulation device (4), and oil-water collection The device (5), the conveying device (6) and the flue gas cleaning device (7) are characterized by:
    所述混合装置(1)包括多个料仓(11)、计量称(12)、混合搅拌装置(13);所述料仓(11)的出料口对准计量称(12)的称量盘,所述计量称(12)的称量盘与混合搅拌装置(13)的进料口对应,料仓(11)内的添加剂经计量称(12)称量后,送入混合搅拌装置(13)内与高含水率含油污泥混合搅拌得到的混合物,混合搅拌装置(13)的出料口连接传送装置(6),经传送装置(6)将混合物送入焚烧装置(2)中;The mixing device (1) comprises a plurality of silos (11), a weighing scale (12), a mixing and agitating device (13); the discharge port of the silo (11) is aligned with the weighing scale (12) The weighing plate of the weighing scale (12) corresponds to the feeding port of the mixing and stirring device (13), and the additive in the silo (11) is weighed by the weighing (12) and then sent to the mixing and stirring device ( 13) mixing the mixture with the high water content oily sludge, connecting the discharge port of the mixing device (13) to the conveying device (6), and feeding the mixture into the incinerator (2) via the conveying device (6);
    所述焚烧装置(2)由前至后依次包括布料段(20)、干燥段(21)、点火段(22)、焚烧段(23)和冷却段(24),所述布料段(20)设有物料打散器(25),所述干燥段(21)和点火段(22)的上方设有预热罩(26),与点火段(22)位置对应的预热罩上设有废气进口(27)和燃料喷嘴(28),形成二燃室,所述干燥段(21)、点火段(22)、焚烧段(23)和冷却段(24)的下方与抽风装置(3)密封连接,所述焚烧段(23)的上方与烟气循环系统(4)密封连接;The incinerator (2) includes a cloth section (20), a drying section (21), an ignition section (22), an incineration section (23) and a cooling section (24) from front to back, and the cloth section (20) A material disperser (25) is disposed, and a preheating cover (26) is disposed above the drying section (21) and the ignition section (22), and an exhaust gas is disposed on the preheating cover corresponding to the position of the ignition section (22) The inlet (27) and the fuel nozzle (28) form a second combustion chamber, and the drying section (21), the ignition section (22), the incineration section (23) and the cooling section (24) are sealed from the air extracting device (3) Connected, the upper portion of the incineration section (23) is sealingly connected to the flue gas circulation system (4);
    所述抽风装置(3)包括多个抽风罩(31)、每个抽风罩(31)连接一套由抽风管(32)和 抽风机(33)组成的抽风管路,所述抽风管(32)和抽风机(33)之间设有油水收集装置(5);The air extracting device (3) includes a plurality of air hoods (31), and each of the air hoods (31) is connected to a set of exhaust pipes composed of an air exhaust pipe (32) and an air blower (33). An oil-water collecting device (5) is disposed between the tube (32) and the exhaust fan (33);
    所述的烟气循环装置(4)包括多个烟气罩(41),每个烟气罩(41)上均设有废气入口(42)和新风配入口(43),所述烟气罩(41)的废气入口(42)与上一级抽风管路的尾端连通,混合物料中的有害物质在高温焚烧中分解形成的烟气,经抽风罩(31)进入抽风管(32),在油水收集装置(5)中进行烟气油水分离收集后,剩余烟气通过抽风机(33)送至下一级烟气罩(41),完成对后段混合物料的干燥和预热,与焚烧段(23)下方连通的最后一级抽风管路中的烟气通过废气进口(27)进入预热罩(26)后,在二燃室进行二次燃烧,深度处理后进入烟气净化装置(7);The flue gas circulation device (4) comprises a plurality of flue gas hoods (41), each of which is provided with an exhaust gas inlet (42) and a fresh air distribution inlet (43), the flue gas hood The exhaust gas inlet (42) of (41) is in communication with the tail end of the upper-stage exhausting pipe, and the flue gas formed by the decomposition of the harmful substances in the mixed material in the high-temperature incineration enters the exhaust pipe through the draft hood (31) (32) After the flue gas oil and water is separated and collected in the oil-water collecting device (5), the remaining flue gas is sent to the next-stage flue gas hood (41) through the exhaust fan (33) to complete the drying and preheating of the mixture material in the latter stage. The flue gas in the last-stage exhaust pipe connected to the lower part of the incineration section (23) enters the preheating cover (26) through the exhaust gas inlet (27), and is subjected to secondary combustion in the second combustion chamber, and enters the smoke after the advanced treatment. Gas purification device (7);
    所述烟气净化装置(7)的出气管经过抽风机连接至烟囱,将净化达标的废气排出。The outlet pipe of the flue gas purification device (7) is connected to the chimney through an exhaust fan, and exhausts the purified exhaust gas.
  5. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:所述干燥段(21)的长度为1-20m。The negative pressure cycle heat storage recovery system according to claim 4, wherein the drying section (21) has a length of 1 to 20 m.
  6. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:所述点火段(22)的长度为1-6m。The negative pressure cycle heat storage recovery system according to claim 4, wherein said ignition section (22) has a length of 1-6 m.
  7. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:所述焚烧段(23)的长度为4-50m。The negative pressure circulating heat storage recovery system according to claim 4, wherein the incineration section (23) has a length of 4 to 50 m.
  8. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:所述的烟气装置(4)的新风配入口上设有进风管调节阀,通过控制其开度控制新风的配入量。The negative pressure circulating heat storage recovery system according to claim 4, characterized in that: the fresh air distribution inlet of the flue gas device (4) is provided with an inlet duct regulating valve, and the opening of the fresh air is controlled by controlling the opening degree thereof. Involvement.
  9. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:所述布料段(20)设有物料打散器(25)。The negative pressure circulating heat storage recovery system according to claim 4, characterized in that the cloth section (20) is provided with a material disperser (25).
  10. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:所述干燥段(21)和点火段(22)的上方设有从前至后由低到高的预热罩(26)。The negative pressure circulating heat storage recovery system according to claim 4, wherein a preheating cover (26) from front to back from low to high is provided above the drying section (21) and the ignition section (22). .
  11. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:与所述干燥段(21)下方连通的抽风管路的尾端与烟气净化装置(7)连通,与所述点火段(22)和焚烧段(23)下方连通的抽风管路的尾端与烟气循环装置(4)连通,与焚烧段(23)下方连通的最后一级抽风管路的出口与预热罩(26)的废气进口(27)连通,与冷却段(24)下方连通的抽风管路与机尾除尘装置连通。The negative pressure circulating heat storage recovery system according to claim 4, wherein a tail end of the exhaust duct communicating with the lower portion of the drying section (21) communicates with the flue gas purification device (7), The end of the exhaust pipe connecting the ignition section (22) and the incineration section (23) is connected to the flue gas circulation device (4), and the outlet of the last-stage exhaust pipe connected to the lower portion of the incineration section (23) The exhaust gas inlet (27) of the preheating hood (26) communicates, and the exhausting conduit communicating with the lower portion of the cooling section (24) communicates with the tail dust removing device.
  12. 如权利要求4所述的负压循环蓄热回收系统,其特征在于:所述油水收集装置(5)包括 上部呈圆柱状,下部呈倒圆锥状的旋风式冷凝除油器(51),所述旋风式冷凝除油器(51)的内部设有螺旋刮油板(52)、外壁设有与抽风管(32)的尾端连通的烟气进口(53)、顶部设有与烟气罩(41)的废气入口(42)连通的烟气出口(54),底部与油水收集器(55)连通,烟气和含油液滴经抽风管进入油水收集装置(5)后,含有液滴经螺旋刮油板(52)与烟气分离,进入油水收集器(55),剩余烟气经烟气出口(54)进入下一级烟气罩(41),实现石油的回收利用。The negative pressure circulating heat storage recovery system according to claim 4, wherein the oil-water collecting device (5) comprises a cyclone type condensing oil remover (51) having an upper portion having a cylindrical shape and an inverted portion having an inverted cone shape. The cyclone condensing oil remover (51) is internally provided with a spiral scraping plate (52), the outer wall is provided with a flue gas inlet (53) communicating with the tail end of the exhaust pipe (32), and the top is provided with flue gas. The flue gas outlet (54) of the exhaust gas inlet (42) of the cover (41) is connected to the oil water collector (55), and the flue gas and the oily liquid droplets enter the oil water collecting device (5) through the exhaust pipe, and the liquid is contained. The drip spiral scraping oil plate (52) is separated from the flue gas, enters the oil water collector (55), and the remaining flue gas enters the next-stage flue gas hood (41) through the flue gas outlet (54) to realize the petroleum recycling.
PCT/CN2018/095197 2017-07-12 2018-07-10 High-water-content oily sludge high-efficient comprehensive utilization method and negative-pressure circular heat storage recovery system WO2019011250A1 (en)

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